DialogFragment實例 - 分配不同的動作

Question

我有很多理解DialoFragment如何工作的問題。

當我點擊6個不同的動作按鈕時，我需要在我的片段中生成6個類似結構的AlertDialog。唯一的問題是，Dialog的PositiveButton onClick事件在每種情況下都會有所不同（基於哪個操作按鈕被點擊）。

而不是寫6次相同的代碼行，我試圖使用DIalogFragment。到目前爲止，我已經到了可以成功顯示6種不同警報的程度，但仍然無法爲他們分配不同的任務。任何幫助將不勝感激。

public class AlertDialogSingleField extends DialogFragment{ 
    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 
     Bundle args = getArguments(); 
     String title = args.getString("title"); 
     AlertDialog.Builder myDialog = new AlertDialog.Builder(getActivity()); 
     LayoutInflater inflater = getActivity().getLayoutInflater(); 
     View layout = inflater.inflate(R.layout.single_field_alert, null); 
     myDialog.setView(layout); 
     myDialog.setTitle(title); 

     myDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int which) { 
       //ACTIONS HERE WILL BE DIFFERENT DEPENDING ON WHICH METHOD WAS CALLED TO CREATE THIS DIALOG 
      } 
     }); 
     return myDialog.create(); 
    } 

    public Interface testActions{ 
     public void ActionForalert1(); 
     public void ActionForalert2(); 
    } 
} 

public class ImportExportFragment extends Fragment implements testActions{ 
    public void alert1(){ 
     DialogFragment alertdialog = new AlertDialogSingleField(); 
     Bundle args = new Bundle(); 
     args.putString("title", "Title1"); 
     alertdialog.setArguments(args); 
     alertdialog.show(getFragmentManager(), "alert1"); 
    } 

    public void alert2(){ 
     DialogFragment alertdialog = new AlertDialogSingleField(); 
     Bundle args = new Bundle(); 
     args.putString("title", "Title2"); 
     alertdialog.setArguments(args); 
     alertdialog.show(getFragmentManager(), "alert2"); 
    } 

    public void ActionForalert1(){ 
     //THINGS TO DO WHEN AlertDialog created through alert1 method 
    } 

    public void ActionForalert2(){ 
     //THINGS TO DO WHEN AlertDialog created through alert2 method 
    } 
} 

Answer 1

我剛找到一個方法。只是張貼參考。原代碼（有問題）中的2個函數的改變應該能夠實現。

在主要片段：

public void alert1(){ 
     DialogFragment alertdialog = new AlertDialogSingleField(); 
     Bundle args = new Bundle(); 
     args.putString("title", "Title1"); 
     alertdialog.setArguments(args); 
     alertdialog.setTargetFragment(this,0); **//ADD THIS LINE** 
     alertdialog.show(getFragmentManager(), "alert1"); 
} 

對話框片段：

myDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() { 
      public void onClick(DialogInterface dialog, int which) { 
       Fragment ft = getTargetFragment(); 
       if(ft != null){ 
        ((eximaction) ft).importFromInternalMemory(et.getText().toString()); 
       } 
      } 
     }); 

Answer 2

只需使用對話框正按鈕偵聽作爲實例變量

public class AlertDialogSingleField extends DialogFragment{ 

    DialogInterface.OnClickListener positiveListener; 

    @Override 
    public Dialog onCreateDialog(Bundle savedInstanceState) { 
     Bundle args = getArguments(); 
     String title = args.getString("title"); 
     AlertDialog.Builder myDialog = new AlertDialog.Builder(getActivity()); 
     LayoutInflater inflater = getActivity().getLayoutInflater(); 
     View layout = inflater.inflate(R.layout.single_field_alert, null); 
     myDialog.setView(layout); 
     myDialog.setTitle(title); 
     myDialog.setPositiveButton("OK", positiveListener); 
     return myDialog.create(); 
    } 

    public void setPositiveListener(DialogInterface.OnClickListener positiveListener){ 
     this.positiveListener = positiveListener; 
    } 

    public Interface testActions{ 
     public void ActionForalert1(); 
     public void ActionForalert2(); 
    } 


} 

public class ImportExportFragment extends Fragment implements testActions{ 

    public void alert1(){ 
     DialogFragment alertdialog = new AlertDialogSingleField(); 
     alertdialog.setPositiveListener(new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialogInterface, int i) { 
         ActionForalert1(); 
        } 
       }); 
     Bundle args = new Bundle(); 
     args.putString("title", "Title1"); 
     alertdialog.setArguments(args); 
     alertdialog.show(getFragmentManager(), "alert1"); 
    } 

    public void alert2(){ 
     DialogFragment alertdialog = new AlertDialogSingleField(); 
      alertdialog.setPositiveListener(new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialogInterface, int i) { 
         ActionForalert2(); 
        } 
       }); 
     Bundle args = new Bundle(); 
     args.putString("title", "Title2"); 
     alertdialog.setArguments(args); 
     alertdialog.show(getFragmentManager(), "alert2"); 
    } 

    public void ActionForalert1(){ 
     //THINGS TO DO WHEN AlertDialog created through alert1 method 
    } 

    public void ActionForalert2(){ 
     //THINGS TO DO WHEN AlertDialog created through alert2 method 
    } 
}